Answer:
Residual income = Operating income - (r x Asset invested)
$8 million = $13 million - (r x 25 million)
$8 million = $13 million - r25 million
r25 million = $13 million - $8 million
r25 million = $5 million
r = $5 million/25 million
r = 0.2 = 20%
Thus, required rate of return is 20%
Explanation:
In this case, we need to apply the residual income formula. Operating income, asset invested and residual income have been given with the exception of rate of return. Thus, rate of return becomes the subject of the formula.